NTSB investigations, OK
318 cases where the phase of flight was Approach.
Cases per year
| 1964 | 11 |
|---|---|
| 1965 | 8 |
| 1966 | 8 |
| 1967 | 11 |
| 1968 | 8 |
| 1969 | 10 |
| 1970 | 8 |
| 1971 | 10 |
| 1972 | 8 |
| 1973 | 8 |
| 1974 | 9 |
| 1975 | 6 |
| 1976 | 11 |
| 1977 | 11 |
| 1978 | 10 |
| 1979 | 7 |
| 1980 | 11 |
| 1981 | 7 |
| 1982 | 5 |
| 1983 | 11 |
| 1984 | 5 |
| 1985 | 7 |
| 1986 | 6 |
| 1987 | 2 |
| 1988 | 3 |
| 1989 | 7 |
| 1990 | 5 |
| 1991 | 5 |
| 1992 | 8 |
| 1993 | 5 |
| 1994 | 7 |
| 1995 | 6 |
| 1996 | 5 |
| 1997 | 4 |
| 1998 | 5 |
| 1999 | 4 |
| 2000 | 5 |
| 2001 | 3 |
| 2002 | 4 |
| 2003 | 3 |
| 2004 | 1 |
| 2006 | 4 |
| 2007 | 2 |
| 2008 | 1 |
| 2009 | 1 |
| 2010 | 5 |
| 2011 | 3 |
| 2012 | 3 |
| 2013 | 2 |
| 2014 | 1 |
| 2015 | 1 |
| 2017 | 5 |
| 2019 | 2 |
| 2021 | 1 |
| 2022 | 3 |
| 2023 | 2 |
| 2024 | 1 |
| 2025 | 2 |
| 2026 | 1 |
Where
Latest cases
Query with SQL
duckdb -csv -c "WITH phase_names(main, name) AS (VALUES (100, 'Prior to flight'), (150, 'Standing'), (200, 'Pushback/towing'), (250, 'Taxi'), (300, 'Takeoff'), (350, 'Initial climb'), (400, 'Enroute'), (450, 'Maneuvering'), (500, 'Approach'), (550, 'Landing'), (600, 'Emergency descent'), (650, 'Uncontrolled descent'), (700, 'Post-impact'), (750, 'After landing'), (800, 'Other'), (990, 'Unknown')),
crosswalk(code, main, name) AS (VALUES (500, 150, 'Standing'), (501, 150, 'Standing - pre-flight'), (502, 150, 'Standing - starting engine(s)'), (503, 150, 'Standing - engine(s) operating'), (504, 150, 'Standing - engine(s) not operating'), (505, 150, 'Standing - idling rotors'), (510, 250, 'Taxi'), (511, 200, 'Taxi - pushback/tow'), (512, 250, 'Taxi - to takeoff'), (513, 250, 'Taxi - from landing'), (514, 250, 'Taxi - aerial'), (520, 300, 'Takeoff'), (521, 300, 'Takeoff - roll/run'), (522, 350, 'Takeoff - initial climb'), (523, 300, 'Takeoff - aborted'), (530, 400, 'Climb'), (531, 400, 'Climb - to cruise'), (540, 400, 'Cruise'), (541, 400, 'Cruise - normal'), (542, 400, 'Maneuvering - holding (IFR)'), (550, 400, 'Descent'), (551, 400, 'Descent - normal'), (552, 600, 'Descent - emergency'), (553, 650, 'Descent - uncontrolled'), (560, 500, 'Approach'), (561, 500, 'Approach - VFR pattern - downwind'), (562, 500, 'Approach - VFR pattern - base turn'), (563, 500, 'Approach - VFR pattern - base leg/base to final'), (564, 500, 'Approach - VFR pattern - final approach'), (565, 500, 'Go-around (VFR)'), (566, 500, 'Approach - IAF to FAF/outer marker (IFR)'), (567, 500, 'Approach - FAF/outer marker to threshold (IFR)'), (568, 500, 'Circling (IFR)'), (569, 500, 'Missed approach (IFR)'), (570, 550, 'Landing'), (571, 550, 'Landing - flare/touchdown'), (572, 550, 'Landing - roll'), (573, 550, 'Landing - aborted'), (574, 550, 'Emergency landing'), (575, 550, 'Emergency landing after takeoff'), (576, 600, 'Emergency descent/landing'), (580, 450, 'Maneuvering'), (581, 450, 'Maneuvering - aerial application'), (582, 450, 'Maneuvering - turn to reverse direction'), (583, 450, 'Maneuvering - turn to landing area (emergency)'), (590, 450, 'Hover'), (591, 450, 'Hover - in ground effect'), (592, 450, 'Hover - out of ground effect'), (600, 800, 'Other'), (610, 990, 'Unknown')),
current_codes AS (
SELECT e.case_mkey, TRY_CAST(e.\"tier1Number\" AS INTEGER) AS code,
row_number() OVER (PARTITION BY e.case_mkey ORDER BY coalesce(e.\"isDefiningEvent\", false) DESC, e.position) AS n
FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' e
WHERE e.aircrafts_position = 1 AND e.\"tier1Number\" GLOB '[1-9][0-9]*'
AND (e.\"isDefiningEvent\" OR e.case_mkey IN (SELECT \"mKey\" FROM 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' WHERE \"isPre1982\"))
),
phases AS (
SELECT case_mkey, 'current' AS scheme, code, CASE WHEN code >= 990 THEN 990 ELSE code // 50 * 50 END AS main
FROM current_codes WHERE n = 1
UNION ALL
SELECT o.case_mkey, 'older', o.\"phaseOfFlightCode\", w.main
FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o JOIN crosswalk w ON w.code = o.\"phaseOfFlightCode\"
WHERE o.aircrafts_position = 1 AND o.\"occurrenceNumber\" = 1 AND o.case_mkey NOT IN (SELECT case_mkey FROM current_codes)
),
case_phases AS (
SELECT p.*, c.\"eventDate\", c.\"highestInjuryLevel\" = 'Fatal' AS fatal, a.aircraft_model_code
FROM phases p JOIN 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c ON c.\"mKey\" = p.case_mkey
LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = p.case_mkey AND a.position = 1
WHERE c.\"eventDate\" >= DATE '1962-01-01' AND p.main IN (SELECT main FROM phase_names)
)
SELECT c.\"ntsbNumber\", c.\"eventDate\", c.\"eventType\", c.\"eventCity\", c.\"eventStateOrRegion\", a.n_number, a.\"aircraftMake\", a.\"aircraftModel\", c.\"highestInjuryLevel\", c.\"totalFatal\", c.\"completionStatus\", c.report_url
FROM 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = c.\"mKey\" AND a.position = 1
WHERE c.\"eventStateOrRegion\" = 'OK' AND c.\"eventCountry\" = 'USA'
AND c.\"mKey\" IN (SELECT case_mkey FROM case_phases WHERE main = 500)
ORDER BY c.\"eventDate\" DESC, c.\"ntsbNumber\" DESC"Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.
WITH phase_names(main, name) AS (VALUES (100, 'Prior to flight'), (150, 'Standing'), (200, 'Pushback/towing'), (250, 'Taxi'), (300, 'Takeoff'), (350, 'Initial climb'), (400, 'Enroute'), (450, 'Maneuvering'), (500, 'Approach'), (550, 'Landing'), (600, 'Emergency descent'), (650, 'Uncontrolled descent'), (700, 'Post-impact'), (750, 'After landing'), (800, 'Other'), (990, 'Unknown')),
crosswalk(code, main, name) AS (VALUES (500, 150, 'Standing'), (501, 150, 'Standing - pre-flight'), (502, 150, 'Standing - starting engine(s)'), (503, 150, 'Standing - engine(s) operating'), (504, 150, 'Standing - engine(s) not operating'), (505, 150, 'Standing - idling rotors'), (510, 250, 'Taxi'), (511, 200, 'Taxi - pushback/tow'), (512, 250, 'Taxi - to takeoff'), (513, 250, 'Taxi - from landing'), (514, 250, 'Taxi - aerial'), (520, 300, 'Takeoff'), (521, 300, 'Takeoff - roll/run'), (522, 350, 'Takeoff - initial climb'), (523, 300, 'Takeoff - aborted'), (530, 400, 'Climb'), (531, 400, 'Climb - to cruise'), (540, 400, 'Cruise'), (541, 400, 'Cruise - normal'), (542, 400, 'Maneuvering - holding (IFR)'), (550, 400, 'Descent'), (551, 400, 'Descent - normal'), (552, 600, 'Descent - emergency'), (553, 650, 'Descent - uncontrolled'), (560, 500, 'Approach'), (561, 500, 'Approach - VFR pattern - downwind'), (562, 500, 'Approach - VFR pattern - base turn'), (563, 500, 'Approach - VFR pattern - base leg/base to final'), (564, 500, 'Approach - VFR pattern - final approach'), (565, 500, 'Go-around (VFR)'), (566, 500, 'Approach - IAF to FAF/outer marker (IFR)'), (567, 500, 'Approach - FAF/outer marker to threshold (IFR)'), (568, 500, 'Circling (IFR)'), (569, 500, 'Missed approach (IFR)'), (570, 550, 'Landing'), (571, 550, 'Landing - flare/touchdown'), (572, 550, 'Landing - roll'), (573, 550, 'Landing - aborted'), (574, 550, 'Emergency landing'), (575, 550, 'Emergency landing after takeoff'), (576, 600, 'Emergency descent/landing'), (580, 450, 'Maneuvering'), (581, 450, 'Maneuvering - aerial application'), (582, 450, 'Maneuvering - turn to reverse direction'), (583, 450, 'Maneuvering - turn to landing area (emergency)'), (590, 450, 'Hover'), (591, 450, 'Hover - in ground effect'), (592, 450, 'Hover - out of ground effect'), (600, 800, 'Other'), (610, 990, 'Unknown')),
current_codes AS (
SELECT e.case_mkey, TRY_CAST(e."tier1Number" AS INTEGER) AS code,
row_number() OVER (PARTITION BY e.case_mkey ORDER BY coalesce(e."isDefiningEvent", false) DESC, e.position) AS n
FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' e
WHERE e.aircrafts_position = 1 AND e."tier1Number" GLOB '[1-9][0-9]*'
AND (e."isDefiningEvent" OR e.case_mkey IN (SELECT "mKey" FROM 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' WHERE "isPre1982"))
),
phases AS (
SELECT case_mkey, 'current' AS scheme, code, CASE WHEN code >= 990 THEN 990 ELSE code // 50 * 50 END AS main
FROM current_codes WHERE n = 1
UNION ALL
SELECT o.case_mkey, 'older', o."phaseOfFlightCode", w.main
FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o JOIN crosswalk w ON w.code = o."phaseOfFlightCode"
WHERE o.aircrafts_position = 1 AND o."occurrenceNumber" = 1 AND o.case_mkey NOT IN (SELECT case_mkey FROM current_codes)
),
case_phases AS (
SELECT p.*, c."eventDate", c."highestInjuryLevel" = 'Fatal' AS fatal, a.aircraft_model_code
FROM phases p JOIN 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c ON c."mKey" = p.case_mkey
LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = p.case_mkey AND a.position = 1
WHERE c."eventDate" >= DATE '1962-01-01' AND p.main IN (SELECT main FROM phase_names)
)
SELECT c."ntsbNumber", c."eventDate", c."eventType", c."eventCity", c."eventStateOrRegion", a.n_number, a."aircraftMake", a."aircraftModel", c."highestInjuryLevel", c."totalFatal", c."completionStatus", c.report_url
FROM 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = c."mKey" AND a.position = 1
WHERE c."eventStateOrRegion" = 'OK' AND c."eventCountry" = 'USA'
AND c."mKey" IN (SELECT case_mkey FROM case_phases WHERE main = 500)
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESCRun it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
NTSB CEN26LA248Accident · Serious injuriesClass 3 · LimitedPreliminary reportPiper PA-30 · Tulsa, OKOn July 9, 2026, about 1729 central daylight time, a Piper PA-30 airplane, N8154Y, was substantially damaged when it was involved in an accident near Tulsa, Oklahoma. The flight instructor and pilot under instruction were seriously injured. The airplane was…NTSB CEN25LA192Accident · Serious injuriesClass 3 · LimitedPreliminary reportPiper PA-32RT-300T · Tulsa, OKOn May 30, 2025, about 1627 central daylight time, a Piper PA-32RT-300T airplane, N130XR, was substantially damaged when it was involved in an accident near Tulsa, Oklahoma. The pilot sustained serious injuries, and the pilot-rated passenger sustained minor…NTSB CEN25FA148Accident · 1 fatalClass 3 · FieldPreliminary reportAnusiewicz Cassutt III M · Haskell, OKOn April 8, 2025, about 1459 central daylight time, a Cassutt III M airplane, N5RR, was substantially damaged when it was involved in an accident near Haskell, Oklahoma. The pilot was fatally injured. The aircraft was operated as a Title 14 Code of Federal…NTSB CEN25LA051Accident · Minor injuriesClass 3 · LimitedFinal reportCessna 340 · Muskogee, OKThe pilot’s improper fuel planning, which resulted in fuel exhaustion and a total loss of power to both engines.NTSB CEN23LA268Accident · Serious injuriesClass 3 · LimitedFinal reportVelocity Velocity XL · Tahlequah, OKA total loss of engine power for undetermined reasons.NTSB CEN23LA224Accident · No injuriesClass 3 · LimitedFinal reportBeech A36 · Oklahoma City, OKA loss of engine power during approach for landing for undetermined reasons.NTSB CEN23FA050Accident · 2 fatalClass 3 · FieldFinal reportCessna 170 · Gage, OKThe non-certificated pilots’ loss of airplane control, resulting in an impact with terrain during final approach. Contributing to the accident was the airplane owner’s impairment due to his use of ethanol and depressant medications, in combination with his…NTSB CEN22LA300Accident · Minor injuriesClass 4 · LimitedFinal reportCessna 150E · Harrah, OKThe flight instructor’s inadequate inflight fuel planning that resulted in fuel exhaustion and a forced landing.NTSB DCA22LA126Incident · No injuriesClass 3 · LimitedFinal reportBoeing 757-236 · Tulsa, OKThe flight crew’s misidentification of the intended landing runway. Contributing to the incident were (1) the flight crew’s failure to perceive and correctly interpret visual and auditory indicators – including electronic guidance – that they were approaching…NTSB CEN22LA066Accident · No injuriesClass 4 · LimitedFinal reportPiper PA-22-135 · Tahlequah, OKA loss of yaw control while on final approach, which resulted in the pilot performing an off-runway landing, and a subsequent nose over. The reason for the loss of yaw control could not be determined based on the available evidence.NTSB GAA19CA536Accident · Minor injuriesData collectionFinal reportCessna 310 · Tahlequah, OKThe total loss of right engine power due to fuel starvation and the pilot's improper fuel management.NTSB GAA19CA142Accident · No injuriesData collectionFinal reportCirrus SR22 · Tulsa, OKThe pilot's failure to maintain a stabilized approach with a tailwind and his subsequent failure to maintain yaw control during an attempted go-around.NTSB CEN18FA023Accident · 2 fatalField investigationFinal reportBeech V35B · Alva, OKThe flight instructor's and pilot's failure to recognize that a high descent rate had developed on short final, likely due to their distraction by an open engine cowling, and the unexpected strong pitch-down force during flap extension due to the installation…NTSB CEN17LA357Accident · Minor injuriesLimited investigationFinal reportBeech A36 · McAlester, OKA total loss of engine power for reasons that could not be determined because postaccident examination of the engine did not reveal any evidence of mechanical malfunctions or failures that would have precluded normal operation.NTSB GAA17CA472Accident · No injuriesData collectionFinal reportMooney M20 · Skiatook, OKThe pilot's improper decision to conduct the flight despite the fuel gauges indicating that there was insufficient fuel for the flight, which resulted in the low amount of fuel in the right tank becoming unported during the multiple turns, and his subsequent…NTSB CEN17LA242Accident · No injuriesLimited investigationFinal reportBellanca 17 30 · Grove, OKAn unporting of fuel in the right wing while maneuvering in the airport traffic pattern, which resulted in a partial loss of engine power due to fuel starvation.NTSB CEN17FA170Accident · 1 fatalField investigationFinal reportAir Tractor AT 602 · Hollis, OKAn impact with terrain during final approach for reasons that could not be determined because no evidence of an in-flight failure or malfunction was observed.NTSB CEN15LA205Accident · Minor injuriesLimited investigationFinal reportPitts Model 12 · Burneyville, OKThe partial loss of engine power due to contamination of the fuel system.NTSB CEN14LA129Accident · No injuriesLimited investigationFinal reportCessna 525 · Elk City, OKThe pilot’s descent below the published minimum descent altitude for the instrument approach procedure, which resulted in impact with a utility pole.NTSB CEN13LA370Accident · No injuriesLimited investigationFinal reportMooney M20J · El Reno, OKA loss of engine power, which resulted from the failure of the magneto assembly for reasons that could not be determined during postaccident examinations.NTSB CEN13CA315Accident · No injuriesData collectionFinal reportCub Crafters CCK · Cookson, OKA total loss of engine power due to water contamination in the fuel. Contributing to the accident was the pilot's failure to check the fuel during the preflight, and failure to check the fuel storage tank’s fuel filter/water separator.NTSB CEN13TA113Accident · Minor injuriesFinal reportCessna 550 · Oklahoma City, OKThe flight crew's decision to fly close behind a heavy airplane, which did not ensure there was adequate distance and time in order to avoid a wake turbulence encounter with the preceding heavy airplane’s wake vortex, which resulted in a loss of airplane…NTSB CEN12CA625Accident · No injuriesData collectionFinal reportBeech 35 · Geary, OKThe student pilot failed to maintain control of the airplane during a forced landing attempt which resulted in an aerodynamic stall. Contributing to the accident was the instructor pilot's delay in taking control of the airplane and the loss of engine power…NTSB CEN12LA179Accident · 1 fatalLimited investigationFinal reportSkeeter 1M · Oklahoma City, OKThe pilot's failure to maintain airplane control while on final approach as he was executing a turn to provide spacing between his airplane and an airplane on the runway.NTSB CEN12CA016Accident · No injuriesData collectionFinal reportCessna 182A · Skiatook, OKA total loss of engine power due to fuel exhaustion as a result of the pilot’s improper fuel management.NTSB CEN11FA434Accident · 1 fatalField investigationFinal reportSchaffer Gary W Lancair · Yukon, OKThe pilot's use of an excessive bank angle while in the airport traffic pattern, which resulted in an accelerated stall. Contributing to the accident were the pilot’s lack of experience in the airplane and the pilot’s distracted attention to the rough running…NTSB CEN11IA280Incident · No injuriesIncident investigationFinal reportBeech 90B · Chickasha, OKThe mechanic's improper installation of the aileron.NTSB CEN10LA572Accident · Serious injuriesLimited investigationFinal reportCessna 172RG · Tulsa, OKA shorted terminal lug on the landing gear hydraulic pump which resulted in a cabin fire. Contributing to the accident was the lack of clear installation procedures for the hydraulic pump.NTSB CEN10CA517Accident · Minor injuriesData collectionFinal reportBeech D35 · Guymon, OKThe loss of engine power for undetermined reasons.NTSB CEN10FA385Accident · 3 fatalField investigationFinal reportCessna 177B · Owasso, OKThe pilot’s failure to maintain adequate airspeed during an engine-out approach to the runway, resulting in an aerodynamic stall and spin. Contributing to the accident was the pilot’s inadequate preflight planning, which resulted in a loss of engine power due…NTSB CEN10FA382Accident · 3 fatalField investigationFinal reportCessna 421 · Tulsa, OKThe pilot’s inadequate preflight fuel planning and management in-flight, which resulted in total loss of engine power due to fuel exhaustion. Contributing to the accident was the pilot’s use of performance-impairing medications.NTSB CEN10LA272Accident · No injuriesLimited investigationFinal reportNorth American T-28A · Oklahoma City, OKThe failure of the master rod bearing, which resulted in a loss of engine power.NTSB CEN10FA071Accident · 1 fatalField investigationFinal reportCessna 310R · Alva, OKThe pilot's impairment due to medication use, a migraine headache, or both, and his decision to continue the approach below minimums without the proper visual references, resulting in the subsequent collision with terrain. Contributing to the accident was the…NTSB DFW08CA229Accident · No injuriesData collectionFinal reportSukhoi SU-31M · Collinsville, OKThe pilot's failure to maintain clearance from marked transmission lines while on final approach.NTSB DFW07LA080Accident · Minor injuriesLimited investigationFinal reportBeech P35 · Ponca City, OKThe loss of engine power for undetermined reasons. A contributing factor was the lack of suitable terrain for the forced landing.NTSB DFW07FA071Accident · 1 fatalField investigationFinal reportStevens KB-2 · Oklahoma City, OKThe pilot's failure to maintain control of the gyroplane while in the traffic pattern. Contributing to the accident was the high wind with terrain induced turbulence and the absence of the gyroplane's horizontal stabilizer.NTSB DFW07LA032Accident · 2 fatalLimited investigationFinal reportNoble Vans RV-7A · Norman, OKThe pilot's failure to maintain airspeed which resulted in an inadvertent stall. A contributing factor was the pilot's attempt at formation flying.NTSB DFW06CA165Accident · No injuriesData collectionFinal reportCessna 210 · Lawton, OKThe loss of engine power for undetermined reasons. A contributing factor was the lack of suitable terrain for the forced landing.NTSB DFW06CA112Accident · No injuriesData collectionFinal reportBell 206B · Vinita, OKThe pilot's improper pre-flight planning, which resulted in a total loss of engine power due to fuel exhaustion. A contributing factor was the lack of suitable terrain for the forced landing.NTSB DFW06CA045Accident · Minor injuriesData collectionFinal reportCessna 150L · Tulsa, OKThe pilot's improper preflight planning and preparation, which resulted in a loss of engine power due to fuel exhaustion.NTSB DFW05LA031Accident · Minor injuriesLimited investigationFinal reportBeech B200 · Tulsa, OKThe loss of engine power due to fuel exhaustion as a result of the pilot's inadequate preflight and in-flight planning / preparation.NTSB FTW04LA046Accident · No injuriesLimited investigationFinal reportBell 206B · Henryetta, OKThe pilot's inadequate visual look out and failure to maintain clearance from guy wire while maneuvering for landing.NTSB FTW04LA031Accident · No injuriesLimited investigationFinal reportCessna 310-H · Oklahoma City, OKThe pilot's mismanagement of the fuel by which he failed to position the fuel selector on the appropriate fuel tanks resulting in fuel starvation. A contributing factor was the pilot's diverted attention.NTSB FTW03LA220Accident · Minor injuriesLimited investigationFinal reportCessna 172M · Ardmore, OKThe failure of the pilot to adequately compensate for existing wind conditions. A contributing factor was the gusty crosswind conditions from the east.NTSB FTW03LA009Accident · Minor injuriesLimited investigationFinal reportCessna 152 · Tulsa, OKThe pilot's improper recovery from a bounced landing and his failure to maintain airspeed. A contributing factor was the pilot's failure to align with the runway.NTSB FTW02LA257Accident · No injuriesLimited investigationFinal reportSmith Aerostar 601P · Piedmont, OKA fuel leak at the left boost pump to bladder tank flange, which resulted in fuel exhaustion and the subsequent loss of power to both engines.NTSB FTW02LA089Accident · No injuriesLimited investigationFinal reportBell 206L-3 · Tulsa, OKthe loss of engine power for undetermined reasons. A contributing factor was the lack of suitable terrain for the forced landing.NTSB FTW02LA073Accident · No injuriesLimited investigationFinal reportCessna 152 · Ardmore, OKthe instructor pilot's delayed go-around which resulted in an in-flight collision with trees. A contributing factor to the accident was the instructor pilot's fatigued condition due to lack of sleep.NTSB FTW02LA052Accident · Serious injuriesLimited investigationFinal reportPiper PA-23-250 · Duncan, OKThe pilot's descent below the minimum descent altitude, and his failure to maintain obstacle clearance. Contributing factors were the below approach/landing minimum weather, the dark night conditions, and the inoperative REIL's.NTSB FTW02LA009Accident · Minor injuriesLimited investigationFinal reportCessna 182A · Chickasha, OKThe loss of engine power for undetermined reasons. A factor was the lack of suitable terrain for a forced landing.